Patent US4290702A successfully refreshed from Google Patents.
Patent EP0488723A2 successfully refreshed from Google Patents.
EP0488723A2
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EP
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Movement vector detection apparatus
Assignee: Canon Inc
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Filing: 1991-11-28
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Granted: —
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Expires: 2011-11-28
Abstract
Abstract A movement vector detection apparatus has a detecting circuit for detecting a movement vector of an image with relation to a change amount of image density value in a determined time at an arbitrary position of the image and a space gradient of image signal at the arbitrary position, and a setting circuit for suitably setting a dimension and a shape of a unit operation area to output the movement vector in response to a space frequency of the input image.
Inventors
- 👤 Toshiaki C/O Canon Kabushiki Kaisha Kondo
- 👤 Masayoshi C/O Canon Kabushiki Kaisha Sekine
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 14:04
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/14; H04N5/144; H04N5/145; H04N23/00; H04N23/60; H04N23/68; H04N23/681; H04N23/6811; H04N23/682; H04N23/683; H04N23/685; H04N23/686
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
79 words
A movement vector detection apparatus comprising: detection means for detecting a movement vector of an image with relation to a change amount of image density value in a determined time at an arbitrary position of the image and a space gradient of image signal at said arbitrary position, and setting means for suitably setting a dimension and a shape of a unit operation area to output said movement vector in response to a space frequency of the input image.
Claim 2
Dependent Claim
32 words
A movement vector detection apparatus according to Claim 1, where said setting means is arranged to determine a boundary of said unit operation area in use of the space gradient of image.
Claim 3
Dependent Claim
34 words
A movement vector detection apparatus according to Claim 1, where said setting means is arranged to determine a boundary of said unit operation area in use of a density difference between chronologically sequential images.
Claim 4
Dependent Claim
86 words
A movement vector detection apparatus detecting a movement vector from an image signal; area setting means for suitably, autometically setting a dimension and a shape of a unit operation area to output a movement vector in response to a space frequency of an input image; and movement vector detecting means for detecting the movement vector of image by effecting the correlation function operation or the matching operation between chronologically sequential images from the image signal of said unit operation area set by said area setting means.
Claim 5
Dependent Claim
32 words
A movement vector detection apparatus according to Claim 4, where said area setting means is arranged to determine a boundary of said unit operation area based on a space gradient of image.
Claim 6
Dependent Claim
39 words
A movement vector detection apparatus according to Claim 4, where said area setting means is arranged to determine a boundary of said unit operation area based on a time gradient represented by a density difference between chronologically sequential images.
Claim 7
Dependent Claim
34 words
A camera having automatically controlled functions, characterised by: movement detection means, wherein the operation of at least one of said control functions is modified in response to an output from said movement detection means.
Claim 8
Dependent Claim
28 words
A camera according to claim 7, wherein a movement vector is generated in response to detecting a change in image density at a predetermined area of the image.
Claim 9
Dependent Claim
24 words
A camera according to claim 8, wherein the selection of said predetermined area is made in response to a space frequency of the image.
Claim 10
Dependent Claim
22 words
A camera according to any of claims 7 to 9, wherein said camera is a video camera or an electronic still camera.
References Cited (Backward Citations)
No citation records indexed.
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